Among the trading ideas this week that were most popular among readers, there were five that stood out:

1. Shares of Rite Aid Corp (NYSE: RAD) climbed $0.40 (5 percent) to $8.28 in Wednesday's session. The previous couple of days had witnessed a large amount of call buying in the issue. A possible reason for the spike could be that market-makers were "hedging their bets by purchasing the shares in the open market to offset their negative position in the issue," said Joel Elconin, the co-host of Benzinga's #PreMarket Prep.

2. Facebook Inc (NYSE: FB) shares spiked $1.67 (92 percent) to $82.58 in Thursday's session. This new all-time high may have been driven by the positive comments from JP Morgan and Nomura about the company's new Payment feature.

3. Shares of Gilead Sciences, Inc (NASDAQ: GILD) slipped $0.60 to $99.84 in Wednesday's session. The pressure was not driven by any relevant news related to the company.

4. The day it was announced that Kinder Morgan Inc (NYSE: KMI) would join the S&P 100 by late March, Chairman Richard Kinder bought $3.95 million worth of shares - 100,000 shares at $39.50 per share. This took Kinder's stake to more than 233.8 million shares.

5. GW Pharmaceuticals Plc (NASDAQ: GWPH) shares jumped $2.20 (2.5 percent) to $97.86 in Monday's session. This followed an impressive rally last Friday, with the share price climbing from $84.58 to $95.66.